Chair frame



FIG. 1 is a left side perspective view of a chair frame showing my new design;

FIG. 2 is a right side elevation of the chair frame of FIG. 1;

FIG. 3 is a bottom elevation of the chair frame of FIG. 1;

FIG. 4 is a top elevation of the chair frame of FIG. 1;

FIG. 5 is a front elevation of the chair frame of FIG. 1;

FIG. 6 is a left side elevation of the chair frame of FIG. 1; and,

FIG. 7 is a rear elevation of the chair frame of FIG. 1. 

The ornamental design for a chair frame, as shown. 